Idiopathic Left Bundle-Branch Block–Shaped Ventricular Tachycardia May Originate Above the Pulmonary Valve

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Idiopathic left bundle-branch block-shaped ventricular tachycardia may originate above the pulmonary valve.

BACKGROUND Idiopathic left bundle-branch block (LBBB)-like ventricular tachycardia (VT) is considered to originate in the right ventricular outflow tract (RVOT) or from the aortic root. Both regions are derived from the embryonic outflow tract. We now report that also the pulmonary trunk can give rise to VT, suggesting a common etiology of these tachycardias. METHODS AND RESULTS We studied 6 ...

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We report the case of a 26-year-old female patient with palpitations and presyncopes due to nonsustained ventricular tachycardia, who had no structural heart disease. The patient underwent electrophysiological study in an attempt to ablate the arrhythmogenic focus, whose location was determined by using mapping criteria. Because mapping of the right ventricular outflow tract was not successful,...

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Introduction Bundle branch reentrant ventricular tachycardia (BBR-VT) is a well-described entity that accounts for 6% of inducible sustained monomorphic VT during electrophysiology studies. BBR-VT is a macroreentrant VT involving the HisPurkinje system and usually requires some form of conduction delay in the His-Purkinje axis. BBR-VT is commonly seen in patients with nonischemic dilated cardio...

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Bundle Branch Reentrant Ventricular Tachycardia

Bundle branch reentrant (BBR) tachycardia is an uncommon form of ventricular tachycardia (VT) incorporating both bundle branches into the reentry circuit. The arrhythmia is usually seen in patients with an acquired heart disease and significant conduction system impairment, although patients with structurally normal heart have been described. Surface ECG in sinus rhythm (SR) characteristically ...

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A 52-year-old woman underwent an electrophysiologic prtKedure because of a 30-year history of recurrent episodes of paroxysmal tachycardia. The baseline sinus cycle length wa.s 600 msec and the QRS complexes had a left bundle branch block configuration, with a QRS duration of 120 msec. The atrial-His (AH) and His-ventricular (HV) intervals were 90 and 20 msec, respectively. Programmed atrial st...

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ژورنال

عنوان ژورنال: Circulation

سال: 2003

ISSN: 0009-7322,1524-4539

DOI: 10.1161/01.cir.0000095026.19339.bb